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http://dx.doi.org/10.5051/jpis.2000400020

Open healing of contained and non-contained extraction sockets covered with a ribose cross-linked collagen membrane: a pilot study  

Friedmann, Anton (Department of Periodontology, Witten/Herdecke University Faculty of Health)
Meskeleviciene, Viktorija (Department of Periodontology, Witten/Herdecke University Faculty of Health)
Yildiz, Mehmet Selim (Department of Periodontology, Witten/Herdecke University Faculty of Health)
Gotz, Werner (Department of Orthodontics, Oral Biology Laboratory, University of Bonn)
Park, Jung-Chul (Department of Periodontology, Dankook University College of Dentistry)
Fischer, Kai R. (Department of Periodontology, Witten/Herdecke University Faculty of Health)
Publication Information
Journal of Periodontal and Implant Science / v.50, no.6, 2020 , pp. 406-417 More about this Journal
Abstract
Purpose: This study investigated whether the placement of ribose cross-linked collagen (RCLC) membranes without primary soft tissue closure predictably resulted in sufficient alveolar ridge preservation in contained and non-contained extraction sockets. Methods: Membranes were positioned across extraction sockets, undermining full-thickness flaps, and the gingival margins were fixed by double-interrupted sutures without crossed horizontal mattress sutures for 1 week. In non-contained sockets, a bone substitute was used to support the membrane within the bony envelope. Radiographs and clinical images obtained 4 months later were analyzed by ImageJ software using non-parametric tests. Results: In 18 patients, 20 extraction sockets healed uneventfully and all sites received standard-diameter implants (4.1, 4.8, or 5.0 mm) without additional bone augmentation. Soft tissues and the muco-gingival border were well maintained. A retrospective analysis of X-rays and clinical photographs showed non-significant shrinkage in the vertical and horizontal dimensions (P=0.575 and P=0.444, respectively). The new bone contained vital bone cells embedded in mineralized tissues. Conclusions: Within the limitations of this pilot study, open healing of RCLC membranes may result in sufficient bone volume for implant placement without additional bone augmentation in contained and non-contained extraction sockets.
Keywords
Bone regeneration; Epithelial tissue; Guided tissue regeneration; Tooth extraction; Wound healing;
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